基于模糊推理的配电网单相接地故障诊断方法  

Diagnosis Method of Single-phase Grounding Fault of Distribution NetworkBased on Fuzzy Reasoning

作　　者：罗宇锋[1] 赵宇丹[2] 陈曦辉 

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454003 [2]河南省电力公司平顶山供电公司,河南平顶山467000 [3]宝丰县电业总公司,河南宝丰467400

出　　处：《工矿自动化》2012年第1期32-35,共4页Journal Of Mine Automation

摘　　要：提出了一种基于模糊推理的配电网单相接地故障诊断方法,即采用模糊理论对传统的零序电流群体比幅法、暂态零序电流互积求和法、信号注入法这三种传统的配电网单相接地故障诊断方法进行改进,根据模糊推理理论将三种故障诊断方法的诊断结果融合以综合判断;针对配电网支路多且复杂,但每条支路并不长的特点,对配电网络进行化简分层,并采用基于模糊推理的配电网单相接地故障诊断方法对分层后的配电网进行逐层判断,最终确定诊断结果。分析结果表明,该故障诊断及电网分层诊断方法能够准确、快速地判断出故障线路。The paper proposed a diagnosis method of single-phase grounding fault of distribution network based on fuzzy reasoning,namely adopting fuzzy theory to improve three traditional diagnosis methods of single-phase grounding fault including amplitude comparison method of zero-sequence current,method of summation of mutual integral of transient zero-sequence current and signal injection method,and fusing diagnosis results of the three methods for comprehensive judgement by use of fuzzy reasoning theory.For problems of numerous,complicated and short branches of distribution network,the paper proposed a network layering method and used the diagnosis method to judge fault of layered distribution network layer by layer for a final diagnosis result.The analysis result showed that the fault diagnosis method and network layering method can judge fault correctly and quickly.

关 键 词：配电网 单相接地故障 故障诊断 零序电流群体比幅法 暂态零序电流互积求和法 信号注入法 模糊推理 电网分层 

分 类 号：TD60[矿业工程—矿山机电]